Every two years modeled estimate, % of children under 5 2000 8.8 2001 9.1 2002 9.4 2003 9.7 2004 9.9 2005 10 2006 10 2007 9.9 2008 9.7 2009 9.3 2010 8.9 2011 8.4 2012 7.9 2013 7.4 2014 6.8 2015 6.3 2016 5.8 2017 5.4 2018 5 2019 4.8 2020 4.6 2021 4.5 2022 4.5